[3] Later, she began to study with New York City Ballet dancers Colleen and Patricia Neary in California.

She was promoted to the corps de ballet in February 2005, to soloist in December 2006, and to principal dancer in October 2009.

[5] In 2014, she started "Tiler Peck Designs", her own dance wear collection carried by Body Wrappers.

In October of the same year, Peck reunited with Susan Stroman in Washington DC to work with her on her new musical, Little Dancer.

[11] She has performed leading roles in Jewels, The Nutcracker, Raymonda Variations, La Sylphide, Romeo and Juliet, Coppélia, The Sleeping Beauty, and Swan Lake.

[21] Peck was the main focus of the 2018 documentary movie Ballet Now[22] which was shown at the 2018 Seattle International Film Festival.